From 5d987969a9ac5ba3641eefa963993786b7aae7f7 Mon Sep 17 00:00:00 2001
From: Shawn Chain <shawn.chain@gmail.com>
Date: Tue, 13 Sep 2022 20:18:03 +0800
Subject: [PATCH] The AX25 sine value ranges from 0-4095, and inside io.write()
 will perform the calculation (value * q15_t(txLevel) >> 15) which may exceed
 4096 and cause the DAC Overflow error

---
 AX25TX.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/AX25TX.cpp b/AX25TX.cpp
index a844c25..aacc05a 100644
--- a/AX25TX.cpp
+++ b/AX25TX.cpp
@@ -160,7 +160,7 @@ void CAX25TX::writeBit(bool b)
       m_tablePtr += 11U;
     }
 
-    buffer[i] = value;
+    buffer[i] = value >> 1;
 
     if (m_tablePtr >= AUDIO_TABLE_LEN)
       m_tablePtr -= AUDIO_TABLE_LEN;